compiler/boost/preprocessor/detail/check.hpp

   1 # /* **************************************************************************
   2 #  *                                                                          *
   3 #  *     (C) Copyright Paul Mensonides 2002.
   4 #  *     Distributed under the Boost Software License, Version 1.0. (See
   5 #  *     accompanying file LICENSE_1_0.txt or copy at
   6 #  *     http://www.boost.org/LICENSE_1_0.txt)
   7 #  *                                                                          *
   8 #  ************************************************************************** */
   9 #
  10 # /* See http://www.boost.org for most recent version. */
  11 #
  12 # ifndef BOOST_PREPROCESSOR_DETAIL_CHECK_HPP
  13 # define BOOST_PREPROCESSOR_DETAIL_CHECK_HPP
  14 #
  15 # include <boost/preprocessor/cat.hpp>
  16 # include <boost/preprocessor/config/config.hpp>
  17 #
  18 # /* BOOST_PP_CHECK */
  19 #
  20 # if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_MWCC()
  21 #    define BOOST_PP_CHECK(x, type) BOOST_PP_CHECK_D(x, type)
  22 # else
  23 #    define BOOST_PP_CHECK(x, type) BOOST_PP_CHECK_OO((x, type))
  24 #    define BOOST_PP_CHECK_OO(par) BOOST_PP_CHECK_D ## par
  25 # endif
  26 #
  27 # if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_MSVC() && ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_DMC()
  28 #    define BOOST_PP_CHECK_D(x, type) BOOST_PP_CHECK_1(BOOST_PP_CAT(BOOST_PP_CHECK_RESULT_, type x))
  29 #    define BOOST_PP_CHECK_1(chk) BOOST_PP_CHECK_2(chk)
  30 #    define BOOST_PP_CHECK_2(res, _) res
  31 # elif BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_MSVC()
  32 #    define BOOST_PP_CHECK_D(x, type) BOOST_PP_CHECK_1(type x)
  33 #    define BOOST_PP_CHECK_1(chk) BOOST_PP_CHECK_2(chk)
  34 #    define BOOST_PP_CHECK_2(chk) BOOST_PP_CHECK_3((BOOST_PP_CHECK_RESULT_ ## chk))
  35 #    define BOOST_PP_CHECK_3(im) BOOST_PP_CHECK_5(BOOST_PP_CHECK_4 im)
  36 #    define BOOST_PP_CHECK_4(res, _) res
  37 #    define BOOST_PP_CHECK_5(res) res
  38 # else // DMC
  39 #    define BOOST_PP_CHECK_D(x, type) BOOST_PP_CHECK_OO((type x))
  40 #    define BOOST_PP_CHECK_OO(par) BOOST_PP_CHECK_0 ## par
  41 #    define BOOST_PP_CHECK_0(chk) BOOST_PP_CHECK_1(BOOST_PP_CAT(BOOST_PP_CHECK_RESULT_, chk))
  42 #    define BOOST_PP_CHECK_1(chk) BOOST_PP_CHECK_2(chk)
  43 #    define BOOST_PP_CHECK_2(res, _) res
  44 # endif
  45 #
  46 # define BOOST_PP_CHECK_RESULT_1 1, BOOST_PP_NIL
  47 #
  48 # endif